Means and method for making adhesive joints and the like



S. BERGSTEIN MEANS AND METHOD FOR MAKING ADHESIVE JOINTS AND THE LIKE Filed July 11 1924 INvENr R ATTORNEY Eatented Feio. 2-3, 1926.

SAMUEL BERGSTEIN, OF MIDDLETOWN, OHIO, ASSIGNOB TO THE INTERSTATE FOLD- ING BOX COMPANY, OF BIIDDLETOWN, OHIO.

MEANS AND METTIUD FUR MAKING ADI-TE"IVE JOINTS AND THE LIKE.

Application filed July 11, 1924.

To all whom it may concern:

Be'iit known that I, SAMUEL Bnnesrnm, a

citizen of the United States, residing in Mi't dletown, in the county of Butler and State of Ohio, have invented certain new and use ful improvements in Means and Methods for Making Adhesive Joints and the like, of which the following is a specification, reference being had therein to the accompanying drawings. 7 This invention relates to improved means and methods for forming adhesive joints of paper products, as paper boxes and the like, the invention being particularly applicable for automatic or semi-automatic box making machinery.

The invention as herein set forth relates broadly to anew principle of applying the adhesive to the box parts to be joined together, and also broadly to the mechanical means employed in the practice of the invention. It will be understood, therefore, that the drawings serve'merely to illustrate the invention in general form as applied in an apparatus in which the main features of such a machine are shown in coordinated relation.

The main object of the invention is to provide means and a method for applying the adhesive to portions of the box to be folded and joined together which will be effective to maintain uniformity in the quantity of adhesive applied at the joints and in the distribution of the same over the surface to be joined together, and thus result in better made boxes.

The common practice in the paper box making industry is to apply the adhesive (glue being commonly used) direct to the surfaces to be glued together. While this method is effective and satisfactory as used in the common practice, the character of gluing devices used with few exceptions are not well developed. There is, therefore, need and possibility for much improvement.

To this end the present invention is a radical departure from the present practice of applying glue to the parts to be formed into joints and consists in first applying the glue' to both sides of a web of paper by running the paper through a bath of glue; second, in cutting the paper into required lengths to conform to the dimensions of the portions of the box to be folded Serial No. 725,401.

and glued; third, in applying the severed portion of the strip between the portions to be glued together; fourth, in causing other portions of the box to be folded over the glued strip, which will then be between the parts; and fifth, in completing the operation by applyingpressure to the glued parts to make the joint firm.

It will be obvious upon consideration of the invention, as herein disclosed, that the adhesive bath is not essential in the practice of the invention. The paper strip which carries the adhesive may be a prepared adhesive material requiring only moisture as it is supplied to the machine, in which event the organization and operation of the machine would be the same as herein described, except that water would be used in the adhesive container instead of the liquid glue.

The accompanying drawings are more or less conventional illustrations of a machine suitable for practicing my invention, it being understood, as above stated, that broad principles of the method and apparatus are being claimed without limitation to specifie features of construction and operation.

In the'drawings:

Fig. 1 is a skeleton outline inside elevation of an apparatus suitable for practicing the invention;

Figs. 2, 3 and at are views illustrating detail features.

The apparatus illustrated in the drawing serves merely to illustrate the coordinated relation in general form of the various mechanisms which coact one with another in applying the invention to a box making machine. The structure here shown is for illustrative purposes only, it being understood that the frame structure for supporting the mechanism and numerous details of the different assembled units which are essential to a completely organized machine have been omitted in the drawing.

As here shown, the apjmratus comprises a roll of paper 1. from which the material for receiving and applying the glue for the box joints is delivered in a continuous web 2, the paper being drawn through a receptacle 3 containing a liquid adhesive, as glue, by feed rollers 4 which also act, by reason of the squeezing action on the paper, to spread the adhesive evenly over the surface of both sides the paper. The feed rollers have step-by-step operation and act therefore, to draw the paper forward in measured lengths.

A cutting device 5, located adjacent the feed rollers, serves to sever the web upon completion of each feeding thereof, thus glue-coated sheets of paper of the desired length for the joints 'tobe made are delivered upon completion of each feeding and cutting operation on a lay boy 6 which acts to deliver the sheets over the partially folded end of a paper box 7, a glued joint being cti'ectedby folding another portion of the box end over the first folded portions with the glue-coated sheet of paper therebetween.

The coordinated operating relation between the different units of the mechanism, as here shown, comprises a main drive shaft 8 to which powerinay be applied in any suitable manner. A pitman wheel 9, supported on shaft 8, is connected to the lower feed roller 4 by a pitinan 10 and pawl and ratchet drive 11, the paper web being guided over an idle roller 12 submerged in the liquid in the container 3. The cutting mechanism comprises a cutter blade 13 which is operatively connected to a cam wheel ll, by a roller 15, the cam wheel being mountec on a shaft 16 which is connected to shaft 8 by a belt 17. The lay boy 6 isactuated by means of a rack 18 and segment 19, operatively connected one to the other in such a relation'that the lay boy is reciprocated through'a half-turn'upon each complete operation of'the raclt,the rack being operated by a pitman 2O driven by a c 'ank 21 connected to shaft 8 by a belt 22. The pressure head 23 is actuated reciprocally by means of a lever 24; pivoted at 25 and con nected to an upward extension 26 of rack 18. Thepaper box 7 is supported on a forming head or knee 27 in position to receive the glue-coated sheet of paper from the lay boy. I

Any suitable means, as the means illustrated in Figs. 3 and 4, may be provided for folding the end flaps of the box a7)- which coact one with another and with the glue-coated sheet 0 to form the box joints. The mechanism for folding the'end flaps, as here shown, is associated with the forining head 2'? and comprises clips 28 for'holding the bones in position on the head piv' oted arms 29 arranged on opposite sides of the head which act to turn the side end flaps a do nward as the hon isplaced in position to receive the glue-coated sheet 0. and arms 30 extended in the opposite direction to arms 29 which act to turn end flap '1) inward to be 'engaged the pressure head 23 as the same is moveddownward to form the joint. Arms 29 and "30 are pivoted on upwardly extended; shafts Slujoined one to the other at their igwe' nds by a liiil i'32' iiia iiiaii'ner to cause the opposite aims 30 30 to move in unison, a handle 38 secured -to one of the shafts 81 serving as a means to rock the shaft in opposite directions to effect folding respectively of end flaps a-a and 7) thus when operating handle 33 is moved in counter-clockwise direction from the position indicated in Fig. l, opposite flaps a will be folded over the box supporting head 27 by the action thereon of arms 29, the folding operation being timed to precede positioning an adhesive-coated strip C over the end of the box; upon moving thehandle in. the opposite or clockwise direction, flap 6 of the box will be folded over flaps to by action of arms 30, adhesion of the folds being then effected by the action thereon of the pressure head 23.

From the foregoing description and the illustrations of the drawings the essentials of asu it abl'e apparatus and the methods for applying my invention will be readily understood by those experienced in the art to which thei'nven tion pertains.

Having described my invention, I claim:

1. The herein described method of forming adhesive joints, consisting in passing a web of material through an adhesive substance, as liquid glue, whereby said material will becomeglue-coated, in severing the web into measured lengths and causing the sevcred portions to be positioned in relation to parts of an article adapted to coact onewith another and with'said glue-coated portion to form. an adhesive joint, in folding said parts one relativeto' another, and in applying pr'essure to the folded portions to effect said joint.

2. The herein described method of form'- i'ng adhesive joints, consistingin passing a web of material through an adhesive substance, as liquid glue, whereby both surfaces of aid material will become glue-coated, in set mg the web into measured lengths and causing the's'evered portions to be positioned in lQlLtiOll'tO'PZlffS of an article adapted to coact one with another and with said gluecoated portion to form an adhesive joint, in folding said parts one relative to another, and in'applying pressure to the folded portionsto effect said j oin't. p

The herein described method of making adhesive joints, consisting in causing a web of iiiate'ri'al to be drawn forward from a source of supply, in'rendering'said material adhesive on both sides thereof. in severing the material in predetermined lengths, in disposing the severed portions relative'to portions of an article, as a box, adapted to coact one with another and with thea-dhesivc material to for-iii a joint, in foldingone portion relative to another wi h said adhesive materia1"therebetwcen, and in applying was sure I to said parts to-"e-itect adhesion between air. parts.

V bod. of fenning adhesive joints, consisting in passing a stance, as liquid glue, whereby said material willbecome coated with glue, in severing the web into measured lengths and causing the severed portions to be positioned between parts of an article adapted to coact one with another and with said glued portion to "form an adhesive joint, in folding said parts one relative to another, and in applying pressure to the -tolded portions to effect said joint.

The herein described method of form ing adhesive joints, consisting in causing sheets of adhesive material to be positioned between portions of an article adapted to coact one with another and with said adhesive portion to term a joint, in folding said parts one relative to another, and in applying pressure to the folned portions "to effect said joint.

6. The herein described method of form ing adhesive joints, consisting in causing a. web of material coated with adhesive on both sides to be severed into neasured lengths, and the severed portions to be positioned relative to parts oi an article adapted to be folded and to coact one with another to form a joint, in folding said parts one relative to another with said adhesive portion therebetween, and in applying pressure to the folded portions to etl'eot said joint.

7. The herein described method of forming adhesive joints, consisting in passing a web of material through an adhesive substance, as liquid glue, whereby said material will become glue-coated, thence in causing the web to be drawn forward bet-ween pres sure devices which act thereon to spread the adhesive evenly over the surface of the web; in severing the web into measured lengths and causing the severed portions to be posttioned between parts of an article adapted to coact one with another and with the nth l esive portion to form a joint, in folding said parts one relative to another, and in applying pressure to the folded portions to effect said joint.

8. In a machine of the character described including in combination with means for supporting a paper box, means to draw a web of material through an adhesive substance, as liquid glue, thereby causing both sides of said material to become coated with saidsubstance, means to sever the web into measured lengths, means to position the severed portions re ative to parts of the box adapted to be folded and to enact one with another and with the adhesive portion to form an adhesive joint, and means to apply pressure to said folded portions to complete the joint.

9, In a machine of the character described including in combination with means for supporting a paper box, means comprising pressure rollers adapted to draw a web of material through an adhesive substance and to spread the adhesive evenly over both sides oi said material. means to sever the web into measured lengths, means to .position the severed portions relative to parts of the box adapted to be folded and to coact one with another and with the adhesive portion to form an adhesive joint, and means to apply pressure to said folded portions to complete the joint.

10.111 a machine of the character described including in combination with means for supporting a paper box, means to produce sheets of material coated on both sides with adl Eve in incasuird lengths, means to position said sheets relative to parts of the box, adapted to be folded and to coact one with another and with the adhesive portion to form an adhesive joint, and means to apply pressure to said folded portions to complete the joint.

11.111 a machine of the character described ineluding in combination with means for supporting a paper box, means for positioning sheets of material coated on both sides with adhesive relative to parts of the box adapted to be folded and to coact one with another and with the adhesive material to form a joint, means to fold said parts, and means to apply pressure to the folded portions to complete the joint.

12.111 a machine of the character described, including in combination with means for supporting a paper box, means for supporting a roll of paper, means for drawing the paper step-by-step from said roll through a receptacle containing a liquid adhesive and acting thereon as the paper is drawn from said receptacle to spread'the adhesive evenly over the paper, means for severing the adhesive-coated paper into sheets of predetermined lengths, means for applying said sheets to an article adapted to be folded with said sheets be tween folded portions thereof, and means for applying pressure to said folded portions to effect adhesive joints therebetween.

1'. In a machine of the character d scribed, including in combination with means for supporting paper box, means for supporting a roll of paper, nroans for drawing the paper step-bystep .l'roin said roll through a receptacle containing a liquid adhesive and acting thereon as the paper is drawn from said receptacle to s n'oad the adhesive evenly over the paper, means for severing the adh 'vecoatod paper into sheets of predete 'mned lengths, means for applying said sheets to an article adapted to be folded with said sheets between l'olded portions thereof, means for applying pressure to said :t'olded portions to eiiect adhesive joints therebetween, and actuating means for ettecting the said respective operalit) ' mined relation to coordinated mechanisms,

in supporting a roll of paper relative to said mechanism, in drawing the paper measured steps through a receptacle containing a liquid adhesive, in spreading the adhesive over the surface of the paper, in severing the measured lengths, in applying the severed portions between parts of said box adapted to be folded one relative to another, in applying pressure to said folded portions to form an adhesive joint therebetween, and in causing the said respective operations to be scribed including in combination with means to support a paper box in process of constrnction on said machine with portions of the box extended, means to fold certain of said portions, IQQIIS to position a strip of material coated on both sides with adhesive over said. folded portions, means to fold said other portions over said strip and means adapted to act upon said folds under pressure to eii'ect adhesion therebetween.

In testimony whereof I affix my signature.

SAMUEL BERGSTEIN. 

